$ systemctl --user stop pipewire-pulse.service
$ systemctl --user start pulseaudio

You can certainly try these commands. They take effect immediately and don't persist past a reboot so they're safe to try and test out.

That at the very least will help narrow down the problem.

    I noticed other issues with my Intel NUC and sent it for warranty repair. I will try to solve the sound issues and repost if needed when I get the unit back.

    4 days later

    I have the same issue. Solus Gnome, and I have used HDMI without any problems until after an update the sound is not working through HDMI (yes, I've checked HDMI is selected as output device).

    Okay Intel replaced my faulty NUC with a new one. But I still have no sound on Solus 🙁 Switching to LTS kernel did not make any difference.

    @kettu Terve kettu. Mistä päin Suomea oot? Pitäsköhän vaan ootella jotain uutta päivitystä?

      Or maybe try installing sof-firmware and adding the snd_hda_intel driver to the blacklist:
      echo -e "blacklist snd_hda_intel" | sudo tee /etc/modprobe.d/blacklist.conf.

      Jumpy kernel alternate: snd_sof_pci_intel_tgl

      maybe this driver will work.
      Then show:

      inxi -Axx | grep driver
lsmod | grep sof
pactl info

          I'll revisit the kernel config options in a future update. Maybe I made a mistake when I was trying to fix this in the past.

            pomon After running echo -e "blacklist snd_hda_intel" | sudo tee /etc/modprobe.d/blacklist.conf nothing seems to change as I still get snd_hda_intel:

            user@user ~ $ inxi -Axx | grep driver
  Device-1: Intel Alder Lake PCH-P High Definition Audio driver: snd_hda_intel
user@user ~ $ lsmod | grep sof
snd_sof_pci_intel_tgl    12288  0
snd_sof_intel_hda_common   172032  1 snd_sof_pci_intel_tgl
snd_sof_intel_hda_mlink    32768  1 snd_sof_intel_hda_common
snd_sof_intel_hda      16384  1 snd_sof_intel_hda_common
snd_sof_pci            20480  2 snd_sof_intel_hda_common,snd_sof_pci_intel_tgl
snd_sof_xtensa_dsp     16384  1 snd_sof_intel_hda_common
snd_sof               307200  3 snd_sof_pci,snd_sof_intel_hda_common,snd_sof_intel_hda
snd_sof_utils          12288  1 snd_sof
snd_soc_hdac_hda       20480  1 snd_sof_intel_hda_common
snd_hda_ext_core       32768  4 snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda_mlink,snd_sof_intel_hda
snd_soc_acpi_intel_match    81920  2 snd_sof_intel_hda_common,snd_sof_pci_intel_tgl
snd_soc_acpi           12288  2 snd_soc_acpi_intel_match,snd_sof_intel_hda_common
snd_soc_core          393216  3 snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hda
snd_intel_dspcfg       28672  3 snd_hda_intel,snd_sof,snd_sof_intel_hda_common
snd_hda_codec         204800  6 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hda_core          131072  9 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda
snd_pcm               184320  11 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_sof,snd_sof_intel_hda_common,snd_compress,snd_soc_core,snd_sof_utils,snd_hda_core,snd_pcm_dmaengine
snd                   139264  20 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_sof,snd_timer,snd_compress,snd_soc_core,snd_pcm
user@user ~ $ pactl info
Server String: /run/user/1000/pulse/native
Library Protocol Version: 35
Server Protocol Version: 35
Is Local: yes
Client Index: 102
Tile Size: 65472
User Name: user
Host Name: user
Server Name: PulseAudio (on PipeWire 0.3.77)
Server Version: 15.0.0
Default Sample Specification: float32le 2ch 48000Hz
Default Channel Map: front-left,front-right
Default Sink: alsa_output.pci-0000_00_1f.3.hdmi-stereo
Default Source: alsa_output.pci-0000_00_1f.3.hdmi-stereo.monitor
Cookie: c77a:05b0

            Mod edit: Used three backticks ( ``` ) to wrap the output so it has nicer formatting and scrollbars. 🙂
            - Evan

              pomon Okay, I tried driver blacklisting again. This time I created the file and folder /etc/modprobe.d/blacklist.conf in Nemo with root privileges instead of using the command line. Now after rebooting, the intel driver is blacklisted successfully.

              Now the following commands look like this:

              user@user ~ $ inxi -Axx | grep driver
  Device-1: Intel Alder Lake PCH-P High Definition Audio driver: N/A
user@user ~ $ lsmod | grep sof
snd_sof_pci_intel_tgl    12288  0
snd_sof_intel_hda_common   172032  1 snd_sof_pci_intel_tgl
snd_sof_intel_hda_mlink    32768  1 snd_sof_intel_hda_common
snd_sof_intel_hda      16384  1 snd_sof_intel_hda_common
snd_sof_pci            20480  2 snd_sof_intel_hda_common,snd_sof_pci_intel_tgl
snd_sof_xtensa_dsp     16384  1 snd_sof_intel_hda_common
snd_sof               307200  3 snd_sof_pci,snd_sof_intel_hda_common,snd_sof_intel_hda
snd_sof_utils          12288  1 snd_sof
snd_soc_hdac_hda       20480  1 snd_sof_intel_hda_common
snd_hda_ext_core       32768  4 snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda_mlink,snd_sof_intel_hda
snd_soc_acpi_intel_match    81920  2 snd_sof_intel_hda_common,snd_sof_pci_intel_tgl
snd_soc_acpi           12288  2 snd_soc_acpi_intel_match,snd_sof_intel_hda_common
snd_soc_core          393216  3 snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hda
snd_intel_dspcfg       28672  2 snd_sof,snd_sof_intel_hda_common
snd_hda_codec         204800  2 snd_soc_hdac_hda,snd_sof_intel_hda
snd_hda_core          131072  5 snd_hda_ext_core,snd_hda_codec,snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda
snd_pcm               184320  8 snd_hda_codec,snd_sof,snd_sof_intel_hda_common,snd_compress,snd_soc_core,snd_sof_utils,snd_hda_core,snd_pcm_dmaengine
snd                   139264  11 snd_seq,snd_seq_device,snd_hwdep,snd_hda_codec,snd_sof,snd_timer,snd_compress,snd_soc_core,snd_pcm
user@user ~ $ pactl info
Server String: /run/user/1000/pulse/native
Library Protocol Version: 35
Server Protocol Version: 35
Is Local: yes
Client Index: 77
Tile Size: 65472
User Name: user
Host Name: user
Server Name: PulseAudio (on PipeWire 0.3.77)
Server Version: 15.0.0
Default Sample Specification: float32le 2ch 48000Hz
Default Channel Map: front-left,front-right
Default Sink: auto_null
Default Source: auto_null.monitor
Cookie: e042:c096

              I have sof-firmware installed, but is it not found?

                ReillyBrogan How did I miss this?

                user@user ~ $ systemctl --user stop pipewire-pulse.service
user@user ~ $ systemctl --user start pulseaudio

                Well I tried it now and have sound. : Thank you and sorry.

                PS: I have both pipewire and pulseaudio packages installed. Removing the unused package was not necessary. And no reboot was needed (infact you should not reboot) after running these commands for the sound to start working. Now I just need to figure out how to make the change persist a reboot 🙂

                    I was finally able to make the fix permanent like this:

                    $ systemctl --user disable pipewire-pulse.service
$ systemctl --user enable pulseaudio

                    What's the output of sudo dmesg? Upload it to pastebin or a similar site and post the output here.

                      I have Solus Gnome:

                      inxi -Aaz
                      Audio:
                      Device-1: Intel Sunrise Point-LP HD Audio vendor: ASUSTeK
                      driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:9d70
                      class-ID: 0403
                      API: ALSA v: k6.4.11-251.current status: kernel-api
                      tools: alsactl,alsamixer,amixer
                      Server-1: sndiod v: N/A status: off tools: aucat,midicat,sndioctl
                      Server-2: JACK v: 1.9.22 status: off tools: jack_control
                      Server-3: PipeWire v: 0.3.78 status: active with: 1: pipewire-pulse
                      status: active 2: wireplumber status: active tools: pw-cat,pw-cli,wpctl
                      Server-4: PulseAudio v: 16.1 status: off (using pipewire-pulse)
                      tools: pacat,pactl

                      Found a solution, it was this:

                      user@user ~ $ systemctl --user start pulseaudio

                      but WITHOUT stopping pipewire-pulse.service.

                      Then I followed jumpy to make this permanent

                      $ systemctl --user enable pulseaudio

                      Thanks everyone!

                      Yes, but pulseaudio is no longer supported on Solus and the server may be removed in a future package update. It would be better to figure out the root cause of this issue so we can get it fixed before then with PipeWire. It looks like SOF might not be loading your firmware, can you try sudo journalctl -b0 > bad-audio.log and upload it to Pastebin? Paste the link here.